1. The other rolls outside, while the other ball roll Inside.
Question #2
2. Inside, since outside have bumpy surface.
Question #3
3. The Ball roll slowly if the force transfer is'nt that strong, and if the surface is'nt even. The Ball roll faster if the force transfer is strong and roll in an even surface with no obstacle.
Answers & Comments
Question #1
1. The other rolls outside, while the other ball roll Inside.
Question #2
2. Inside, since outside have bumpy surface.
Question #3
3. The Ball roll slowly if the force transfer is'nt that strong, and if the surface is'nt even. The Ball roll faster if the force transfer is strong and roll in an even surface with no obstacle.